通过100℃等温时效XRD分析可知,单辊快淬锌铝合金早期时效过程中胞状分解反应(即α'→α'T+η)为主导.DSC数据计算得出,胞状分解的相变激活能为88.24kJ/mol,表明其分解主要受锌原子扩散控制.同时还发现,调幅分解几乎与胞状分解同时发生,二者之间没有明显界限,调幅波长为2.16nm.快速凝固工艺极大地提高了合金元素的固溶度,新型合金具有很高的硬度,并且呈典型时效硬化特性.
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